Machine foe forming clamps in sheets of metal



(No Model.)

G. HAYES.

MAGHINE FOR FORMING CLAMPS IN SHEETS 0F METAL.

No. 326,557. Patented Sept. 22-, 1885.

INVENTOB.

WITNESSES. fin /W524 all whom it may concern: V Be it known that I, GEORGE HAYES, a resident of the city, county, and State of New NiTEn STATES .GEO RGE HAYES, OF NEW YORK, N. Y.

SPECIFICATION forming part of Letters Patent No. 326,557, dated September 22, 1885.

Application filed May 14, 1884. (No model.)

York, and a citizen of the United States, have invented a new and. useful Machine for Cut ting,Punching,.and Clipping or ClampingTwo or More Sheets of Metal together, of which the following is a specification.

The object of this invention is to cut into (or make an incision in) and through two or more sheets of sheet metal, forming a tongue, bending the said tongue out of place by means of a plunger or cutting-die, and then, by means of a bending and pressing device operated by the pressure givenbythecutting-die,turning backward against the side of the sheet the said tongue, so that itforms a clip or clamp, securr ingthe'twoor 'more' sheets tog ether rTi-ini y,

it thereby serving the same purpose as rivets, and thus dispensing with the necessity of rivets and the labor and time consequent upon I peculiar construction of the operating face or end of the cutting-die; thirdly, it consists in the peculiar construction of the bending, fo1d-' ing, and pressing die; fourthly, it consists in the peculiar combination of the two .dies or device whereby they act together, the' foldingdie movement being caused bythe downward or toward movement of the cutting-die; and,

fifthly, in the combination therewith of a set back spring, whereby the folding-die is returned to its normal position after the bend or fold given the tongue is finished.

, In the accompanying drawings, Figure '1 represents a machine adapted for making the clamp. Fig. 2 represents the cutting and folding devices with sheets of metal therein insection. Fig. 3 represents part of sheets of metal clamped together. The sheets are shown turned over. Fig.4 represents the cutting device in perspective to show the cutting-edges.

A represents two sheets of metal together 4 flatwise.

B represents the clamp, abcing the tongue; 1),. the opening from whence the tongue has been turned. All-the sheets, no matter what the number may be together, are operated upon and the tongue formed therefrom.

C represents the plunger or cutting-die,having a'rounded face, a, about as shown, with three cutting-edges, d,- or the cutting-edge may be rounded or teed, as desired, constituting one edge. The back edge at e has no cutter, as the tongue must still remain a part of the sheets. As this die. is forced down upon the metal it cuts through, making a thin incision of the shape required. The die also presses out the tongue from the sheet in position shown "in'Ffg. 2, when the said die engages with the folding device, forcing that backward.

D represents the folding-die, pivoted at f, giving theresistance. The folder D has its upper end at g rounded about as shown in Fig.

as I do not confine myself to the precise form shown.

The plunger 0, I operate by means of. any suitable operative mechanism, and it may be driven in any direction by any means'suitable, or from above, as shown, and using either steam-power, treadle, hand, horse, or water,

as most convenient.

There may be several of the clamps formedat once by having'the forming devices ar- "ranged in gangs in the same machine and operated by the same power.

The heel e, I form with a flat portion, as shown, to hold the sheets back against the folderand prevent its bulging.

The folder and spring may be placed in a block, which may be set upon the bed of any press to which the plunger may be a plied.

The style of press illustrated in the diawings is given to show howthe devices are operated by suitable power. I do not confine .niyself to the precise form shown.

The drawings show knife-edges to the plum ger. \Vhere such edges are used the folder must be narrow d to pass between them; but sharp angle-ech es may be used instead.

:Whut I claim us new, and desire to secure by Letters Patent of the United States, is

1. A machine containing it plunger or cutling-die, 0, provided with rounded or curved face 0, having cutting-edges cl, adapted to cut through two or more sheets of metal to form the tongue a, the face 0, to press the tongue a outwardly, (the plunger operated byany suit' able mechanism 'Whiehwill give it reoiproczttiug DlOl'iOlL) and in combination therewith a folder or bender, D pivoted in a block or bedplute, F, as at f, its upper end having 'a rounded i'nce, g, and adopted to be set in mo tion and forced bur-hwurd by the plunger asit presses downward, and by its couetiou with the plunger to turn over and force backward and upward the tongue and form it into the clamp B, substantially as set forth.

2. The plunger oiycutting-di e 0, provided with it curved face, c,-and the cutting-edges d, the curve of the face being convex, and its plunger is forced down upon one or more sheets of metal the sharp angles will cut from toe to heel a tongue, a, in the metal, and at the same time the curved face will force outward the tongue with a bend at the heel of the die, substantially as shown and described.

3. In combination with plunger 0, having a convex curved face, 0, adapted to form the tongue a in sheet metah'the folder D, oper nted by the downward pressure of the plunger C to curl or turn back the tongue a, formed by the plungenand ooneting therewith to form the clump B, substantially as set forth.

GEO. HAYESv V'Jitnesses:

RICHARD H. REILLI'J, JACOB K0011. 

